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瓣状甲是存在于我国北方许多汉族人群中的一种性状,其表现为小趾趾甲分瓣。我们通过对陕西省周至县某自然村的入户调查发现,瓣状甲的频率为79.17%,其中男性为81.48%,女性为76.67%,性别分布无统计学差异(χ2=1.09,P=0.295)。瓣状甲可为单侧或双侧发生,男性和女性的单、双侧瓣状甲频率无统计学差异(χ2=2.94,P=0.23)。13个年龄组间瓣状甲的频率差异有统计学意义。对2个完整的三代家系和51个核心家系的系谱分析,发现瓣状甲的遗传特点与常染色体单基因显性性状一致。因此,我们认为,瓣状甲是一种单基因显性性状,具有不同的表现类型,既可单侧发生,亦可双侧发生,其分布无性别差异,但有年龄差异。 相似文献
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洛阳市汉族群体ADH2和ALDH2的基因多态性研究 总被引：8，自引：0，他引：8
为研究洛阳市汉族群体ADH2和ALDH2基因的多态性分布,应用聚合酶链反应-扩增片段长度多态性（PCR-APLP）分析法,对ADH2基因外显子3和ALDH2基因外显子12的特定片段同时进行特异性扩增,用非变性的聚丙烯酰胺垂直凝胶电泳和DNA银染方法判定基因型。ADH2*1和ADH2*2等位基因频率分别为42.86%和57.14%,ADH2*1/*1、*1/*2和*2/*2的基因型频率分别为22.86%、40.00%和37.14%;ALDH2*1和ALDH2*2的等位基因频率分别为85.24%和14.76%,ALDH2*1/*1、*1/*2和*2/*2的基因型频率分别为71.43%、27.62%和0.95%。洛阳市汉族群体ADH2和ALDH2的等位基因频率和基因型频率不同于台湾人和上海人,ALDH2*1/*1基因型频率明显高于上海人和台湾人的。因而,洛阳市居民对酒精的耐受性比上海人和台湾人强。
Studies of Genetic Polymorphisms of ADH2 and ALDH2 among the Han Population in Luoyang China
ZHANG Zhu-mei1,LIU Cha-zhen1,BIAN Jian-chao1,TANG Bo-ming2,JIANG Feng1,WANG Qi-jun2,WANG Qi-min2,ZHU Xin2,SHEN Fu-min1
1.Department of Epidemiology,Public Health School of Fudan University,Shanghai 200032,China;
2.Section Office of Epidemiology,Luoyang Hygiene and Anti-epidemic Center,Luoyang 471000,China
Abstract:In order to investigate genetic polymorphisms of ADH2 and ALDH2 among the Han population in Luoyang City,portions of exon 3 of ADH2 and exon 12 of ALDH gene were amplified by using polymerase chain reaction.The amplified products were electrophoresed on 10% undenatured vertical polyacrylamide gels and stained with argentine.Frequencies of ADH2*1 and ADH2*2 alleles are 42.86% and 57.14%.Frequencies of three genotypes of ADH2 are 22.86%、40.00% and 37.14%,respectively.Frequencies of ALDH2*1 and ALDH2*2 alleles are 85.24% and 14.76%.Genotype frequencies of ALDH2 loci are 71.43%、27.62% and 0.95%,respectively.Genetic polymorphisms of ADH2 and ALDH2 among the Han population in Luoyang City are different from those among Taiwanese and Shanghainese.Frequency of ALDH2*1/*1 in Luoyang people is higher than those in Shanghai and Taiwan.Therefore,there is a higher resistance to alcohol drinking in the Han population in Luoyang.
Key words：polymerase chain reaction-amplified products length polymorphism; alcohol dehydrogenase 2; aldehyde dehydrogenase 2; genetic 相似文献
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